@article{RSMUP_1981__65__53_0,
     author = {Testa, Stefano},
     title = {Su un universo di dispositivi monotoni},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {53--57},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {65},
     year = {1981},
     mrnumber = {653282},
     zbl = {0499.18007},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1981__65__53_0/}
}